FOSS gamedev and creative worlds

hello, I wonder if is possible instead of running minetest as a standalone window, to run it within a larger app (in order to provide a complementary UI, maybe a webview, for educational purpouses)
I had been thinking about something like nw.js or electron. thanks for any feedback on this.

PD: another requirement I am trying to figure is how to establish communication between minetest and the host app.

You probably need to modify the minetest client to be embedded in some ways (and the communication is not a problem).
Otherwise it's really platform dependent; you will end up with different code for each platform you want to support (and even with that, you'll probablt need to modify minetest to handle such a case)